Oil pickup structure of a compressor

Abstract

An oil pickup structure of a compressor is constituted by a lubricant supplying apparatus of the tube type placed somewhat slantly at the end of the crank shaft, in which the tube has the cross-section with the same size throughout its over all length, at least one means for separating the refrigerating gas from the tube and discharging therefrom, and a projecting member mounted at the middle portion of the tube with being spaced away from said gas separating/discharging means so as to reduce the noise by the lubricant.

What is claimed is: 
     
       1. An oil pickup structure of a compressor provided with a lubricating device including a tube for transporting a lubricant therethrough, having a first end for connection to a crankshaft and a second end for immersion into a lubricant, the central axis of the tube being positioned at an angle with respect to the rotational axis of the crankshaft, the improvement comprising: a first opening in the wall of said tube between said first and second ends;   a second opening extending from said first end to said first opening;   a third opening extending from said second end to said first opening; and   a vane projecting from said tube and extending over said first opening;   wherein said tube has a uniform interior passage throughout its length.   
     
     
       2. The oil pickup structure of claim 1, wherein: said second and third openings are elongated in the axial direction of said tube and aligned parallel to said central axis.   
     
     
       3. The oil pickup structure of claim 1, wherein: said second and third openings are of substantially the same dimension.   
     
     
       4. The oil pickup structure of claim 1, wherein: said second and third openings have a width between 0.5 and 1.5 mm.   
     
     
       5. The oil pickup structure of claim 1, wherein: said vane includes a portion for blocking travel of lubricant along an exterior of said tube.   
     
     
       6. An oil pickup structure of a compressor provided with a lubricating device, said device including a tube for transporting a lubricant therethrough, said tube having a first end for connection to a crankshaft, a second end for immersion into lubricant and a vane projecting from a middle portion of the tube, a central axis of said tube being positioned at an angle with respect to a rotational axis of the crankshaft, the improvement comprising: a lower opening extending in a predetermined uniform width from said second end of said tube to near a lower end of said vane;   a top opening extending in said predetermined uniform width from said first end to near a top end of said vane;   a middle opening extending in a relatively wider width than that of said top opening from a lower portion of said top opening to a top portion of said lower opening, wherein all center lines of said openings are on a center line of said tube; and   said vane projecting at a predertermined distance away from said middle portion of said tube and crossing over said middle opening for preventing bubbles by said vane and equalizing refrigerating gas volumes passing in turn through said lower opening, said middle opening and said top opening.   
     
     
       7. The oil pickup structure of claim 6, wherein: said lower opening, said top opening and said middle opening are elongated in the axial direction of said tube and are aligned parallel to the central axis.   
     
     
       8. The oil pickup structure of claim 6, wherein: said tube has a uniform interior passage throughout its length.   
     
     
       9. The oil pickup structure of claim 6, wherein: said lower opening and said top opening have widths between 0.5 and 1.5 mm.   
     
     
       10. The oil pickup structure of claim 6, wherein: said vane includes a portion for blocking travel of a lubricant along an exterior of said tube.   
     
     
       11. A process for lubricating parts of a compressor having an oil pickup device used in a condenser including a vertical shaft of said compressor, a crank shaft, a knob and an oil passage in said knob comprising a method of: connecting a first end of a tube to said oil passage;   immersing a second end of said tube in a lubricant;   said tube having a first fissure of uniform width formed in a middle part of said tube;   said tube having a second fissure narrower than said first fissure and having a constant width, said second fissure formed in an upper part of said tube and connected to an upper part of said first fissure and extending to said first end of said tube;   said tube having a third fissure narrower than said first fissure and having a constant width, said third fissure formed in a lower part of said tube and connected to a lower part of said first fissure and extending to said second end of said tube;   said tube having a vane connected to said middle part of said tube and extending over said first fissure in a position spaced away from said first fissure; and   rotating said vertical shaft to thereby rotate said tube in order to pick up said lubricant and thereby accelerate particles of said lubricant upward through said tube to effect pumping of said lubricant at a certain velocity to said parts of said compressor.   
     
     
       12. The process as claimed in claim 11, wherein said tube has an uniform interior passage throughout the length of the tube. 
     
     
       13. The process as claimed in claim 11, wherein said constant width of said second fissure is between 0.5 and 1.5 mm. 
     
     
       14. The process as claimed in claim 11, wherein said constant width of said third fissure is between 0.5 and 1.5 mm. 
     
     
       15. The process as claimed in claim 11, wherein said constant width of said second fissure and said constant width of said third fissure are equal. 
     
     
       16. The process as claimed in claim 15, wherein said equal constant widths are between 0.5 and 1.5 mm. 
     
     
       17. The process as claimed in claim 15, wherein said uniform width of said first fissure is formed so as to emit an amount of refrigerating gas trapped in said lubricant equal to an amount of refrigerating gas emitted from said second fissure and said third fissure. 
     
     
       18. The process as claimed in claim 15, wherein said vane blocks flow of the lubricant along said tube's peripheral wall and is positioned over said lubricant to minimize formation of bubbles in said lubricant as said tube rotates thereby enhancing said pumping effect. 
     
     
       19. The process as claimed in claim 18, wherein said third fissure blocks introduction of said bubbles into said tube so that uniform amounts of refrigerating gas trapped in said lubricant is emitted through said first, second and third fissures is uniform thereby enhancing the velocity of lubricant pumped.